diff -r 32af4954e46a Lib/idlelib/MultiCall.py
--- a/Lib/idlelib/MultiCall.py	Tue Feb 04 18:44:17 2014 -0800
+++ b/Lib/idlelib/MultiCall.py	Wed Feb 05 12:32:08 2014 +0200
@@ -226,8 +226,11 @@
             self.doafterhandler.append(doit)
 
     def __del__(self):
-        for seq, id in self.handlerids:
-            self.widget.unbind(self.widgetinst, seq, id)
+        try:
+            for seq, id in self.handlerids:
+                self.widget.unbind(self.widgetinst, seq, id)
+        except _tkinter.TclError:
+            pass
 
 # define the list of event types to be handled by MultiEvent. the order is
 # compatible with the definition of event type constants.